Cut-off valve.



H. H. SPARR & L. H. NEUJAHR.

CUT OFF VALVE.

APPLICATION men JULY 19. m5.

1,1 6,%. Patented Nov. 16, 1915.

HQ HSPHRR, W L. H.NEUJHHR.

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HARRY H.- SPARR AND LEO H. NEUJAHR, OF DENVER, COLORADO.

OUT-OFF VALVE.

Specification of Letters Patent.

Patented Nov. 16, 1915..

Application filed July 19, 1915. Serial No. 40,754.

To all whom it may concern:

Be it known that we, HARRY H. SPARK and LEO H. NnUJAi-m, citizens of the United States, residing at Denver, in the county of Denver and State-of Colorado, have invent ed certain new and useful Improvements in Cut-0fi Valves, of which the followingis a specification, reference being had to .the accompanying drawings.

This inventionrelates to certain improvements in cut-off valves, and it. is-an object of the invention to provide a novel and improved device of this general character wherein the possibility of the same being centered is eliminated.

The invention consists in the details of construction and in the combination'and arrangement of the several parts of our improved cut-olf valve whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fully set forth.

The novel features of the invention will be carefully defined in the appended claims.

In order that our invention may be the better understood, we will now proceed to describe the same with reference to the accompanying drawings, wherein- .Figure l is a plan view of a valve mechanism constructed in accordance with an embodiment of our invention; Fig. 2 is a horizontal sectional view taken through the device as herein disclosed, showing the valve adjusted in cut-off position; Fig. 3 is a view similar to Fig. 2, with the valve adjusted to a difl'erent position; and Fig. 4 is a sectional view taken through the inlet and exhaust ports of the valve mechanism and illustrating certain details of construction.

As disclosed in the accompanying draw-- ings, 1 denotes the casing of our improved valve having the diametrically opposed ports 2 adapted for communication with the cylinder of an engine and having the inlet port 3 and the exhaust port 4 diametrically opposed to the inlet port 3.

Disposed axially of the bore of the casing 1 and operatively engaged with the heads 5 is the shaft 6. Loosely mounted upon said shaft 6 is the valve member 7, the extremities of which coacting with the ports 2 and to facilitate such coaction the face of the valve member 7 opposed to the exhaust port 4 is oppositely beveled from its transverse center, as indicated at 8. The opposite face of the valve member 7 is provided with the convex portion 9 disposed around the axial center of the shaft 6 and with which is engageable the concave surface of the second valve memberlO, the ends of which being provided with depending arms 11 loosely engageable with the shaft 6, theends of the valve member 7 being providedwith radial recesses 14 to permit said mounting. The valve member 10 coacts with the intake port 3 and hasits working face or end provided with a groove 15 to receive the extension 17 of the reciprocating rod 18 disposed through the casing l and intersecting the in take port 3. The rod 18 is operated through the medium of any suitable valve gear.

, Upon outward movement of the rod 18, the valve member 10 will bemoved in the same general direction whereupon the fluid entering through the inlet port 3 will pass out through the port 2 at the left of the casing 1 as the pressure of the fluid will cause the valve member 7 to engage the seat 19 positioned between said port 8 and the exhaust port 4 and the exhaust fluid will pass through the second port 2 beneath the valve member 7 and through the exhaust port 4, said travel being facilitated by the beveled face 8. Upon reverse movement being i1n parted to the rod 18, the flow of the fluid will be reversed.

From the foregoing description, is is thought to be obvious that a cut-off valve constructed in accordance with our invention is of an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of the convenience and facility with which it may be assembled, and it will also be obvious that our invention is susceptible of some change and modification without material departure from the principles and spirit thereof and for this reason we do not wish to be understood as limiting ourselves to the precise arrangement and formation of the several parts herein shown in carrying out our invention in practice.

We claim:

1. A casing provided with opposed ports, an inlet port at one side of the plane of the first named ports and having an exhaust port at opposite side of the plane of the first named ports, a loosely mounted valve member within the casing coacting with the first named ports, a second valve coacting with "eb ie's of 'fliis pathwa be obtained m the inlet it port, and means for imparting rocking movement to'the second valve member.

2. A casing provided with opposedports,

' an inlet port at one side of the plane of the and havingexhaust ber independently of the first named valve S3. A casing provided'with (mposed ports, an inlet, port at one side of the plane of the first-named, ports and having an exhaust port at opposite side of the plane "of the first named ports; a 'ioosely' mounted valve member within the casing coactingwith the first named port's', a scond-valve coactingwith the inlet port, means for imparting rocking movement "to; the second valve member," *both' of "valve members -being movable abont a common center.

,4 i lasing provided With opposed"ports, an inlet port at onesi'de ofthe' plane-of the "first named ports and having an exhau st port at opposite side of .thefplane of the' fir'st named ports, a loosely mounted valve member ithin the casing coacting with the first named ports, a second valve coacting with the inlet port, and means for imparting rocking movement to the second valve member, the face or"; the first named valve member opposed to the exhaust port being oppositely beveled.

5. A casing provided with opposed ports, an inlet port at 'onesid'e of the plane of the first named ports and-having an exhaust port at opposite side of-the plane of the first named ports, a loosely mounted valve member within the casing coacti'ng" with the first named ports, a second valve coasting with the inlet port, and means for imparting rocking-movement to the second valve member, the bore of the casingat a point between each ofthe first named ports and the exhaust port-being provided with a valve seat with which the firstnamed valve member coacts.

Intes'timony whereof we hereunto aflix our signatures inthepresence of two witnesses.

HARRY'H. SPARK. LEO- Il. NEU'JAHR itne'ss'es:

' J EHAEFEI J Krrsoiv.

{five 'ce'nts'e'aohghy addressing the Commissioner of Batents, 

